Question

The area, in square units, of a rectangle is represented by the expression (x-4) (x+4) Which expression represents an equivalent area, in square units?

x^2-4

(x-8) (x+8)

(x-16) (x+16)

x^2-16

Answer 1

x^2-16

Explanation:

Foil Method

(x*x+4x-4x-16)

x^2-16